Add starting pointer

[YodasWs]

At the start of a game, until the Player finds Rome, have a vague directional arrow on the world map pointing the player roughly in the direction of Rome.

• The arrow should be static, pointing on the same direction regardless of where the Player pans the map.
• The arrow should point roughly in the direction from the Player's starting location to Rome, plus some degree of error.
• The arrow's should not be adjusted once set at the start of the game.
• The arrow should disappear once the Player has found Rome.